Thomas m



(ModeL) T. M. HART.

Cotton Scraperand Chopper. 'No. 243,129. Patented June 21,1881.

' Se I t, afa% 0' UNITED STATES PATENT OFFICE.

THOMAS M. HART, OF WEBSTER, MISSOURI.

COTTON SCRAPER AND CHOPPER.

SPECIFICATION forming part of Letters Patent No. 243,129, dated June 21, 1881.

Application filed March28, 1881. Model;)

.To all whom it may concern:

Be it known that I, THOMAS M. HART, a citizen of the United States, residing at Webster, in the county of Oregon, in the State of Missouri, have invented a new and useful Improvement in Cotton Scrapers and Choppers, of which the following is a specification.

My invention relates to improvements in cotton scrapers and choppers in which adjustable revolving choppers are operated in conjunction with one or more adjustable scrapers which are so arranged as to precede the choppers; and the objects of my invention or improvements are, first, to provide scrapers which may be raised or lowered, or be readily changed in their lateral position; second, to provide a revolving chopper which may be adjustable by lengthening or shortening the arms to which the choppers are attached; thirdly, to secure strokes of the choppers at regular intervals and distances apart. I attain these objects by the mechanism illustrated in the accompanying drawings, in which-- Fignre 1 is a perspective view, with part of the shield over the chopper-arms broken away. Fig. 2 is a detailed longitudinal section. Fig. 3 is a transverse section. Fig. 4 is a top plan. Fig. 5 is a detailed view of chopper. Fig. 6 is a detailed plan of the cross-head.

Similar letters refer to similar parts throughout the several views.

In Fig. 1 the main frame A A is rectangular in form, with a tongue, A, extending in front and resting on axles O a, supported by wheels B B B B. The tongue A is attached to the axle a by a king-bolha, for draft and to facilitate turning the whole machine around. The wheels B B are rigidly held upon the axle O, which is secured to the frame A A by hanger-boxes attached, and on this axle is a beveled gear, D, secured in place by a set screw or pin, and intergearin g with another beveled gear, D, rigidly attached to a revolving shaft, Fig. 2, which is supported at its geared end by a box attached to a cross-beam of the frame A A, and at the opposite end by a similar box on the frame A A, in which boxes, by motion imparted to it through the axle O and the traction of the wheels B B upon the ground, it is revolved at right angles to the axle O.

The two-armed cross-head 0, Fig. 2, is recessed on its opposite face sides to receive and support the adjustable chopper-arms c c, and is held by a nutted bolt, 0 extending through the slots 0 0 cross-head C, and shaft 0', as shown in Fig. 6, so that the chopper-arms c 0 may be shortened or lengthened.

c 0', Fig. 2, is a longitudinal section, showing the slots 0 c at one end of the arm, and the curved and pronged part 0, with the steel choppers c 0 attached at the opposite end, permitting the dirt to pass freely through.

Attached to the curved beams E E, Fig. 1, are the scrapers e e, of usual shape, and arranged one on each side of the tongue A, Fig. 3, and these beams are loosely fulcrumed thereto on thepin c, Fig. 1, so that they may be moved vertically or laterally, as i c it e.

The cross-bar H, Fig. 3, with a standard part, F, extending above and below it,is screwthreaded on both ends, and on each end has two or more nuts, h h, between which the scraper-beams E E are held at any desired distance apart.

Upon the standard F, Fig. 3, is a spiral spring, f, held by a nut, f for adjusting the lever F, which is attached to the bottom by a pin, and is operated by the cross-bar G, Fig. 3, supported at one end by a standard-box and at the opposite end in the lower part of the ratchet-gear G Fig. 2, and is operated by the hand-lever G and ratchet, whereby the scrapers may be raised or lowered.

i" F, Fig. 3, represent two footlevers fulcrumed on the pin i and there crossing each other, extending upward, so that the riders feet may rest upon them for their operation, and extending below alongside the scrapers, as seen in Fig. 2, I I, for the purpose of moving them sidewise, as is indicated by the dotted lines 11 i Fig. 3.

I am aware of scrapers and revolving choppers being used for the purposes described, but each of them essentially differs from mine in its construction, parts, and combination.

Having thus fully described my invention, I claim as new and desire to secure by Letters Patent 1. In a cotton seraperand chopper, the combination, with the frame A and tongue A, of

the curved scraper'beains E E, pixoted to the tongue at e, the screw-threaded brace and spreader H, lifting-lever G, and geared chopper, with adjustable hose, as shown and described.

2. The pivoted beams E E, with adjustingbrace H, in combination with the rock-shaft Gr, arm F, pivoted standard F, spring f, lever G, and ratchet G substantially as shown and 10 described.

3. The pivoted beams E E, brace H, adjust able lever-arm F, and rock-shaft G, in combination with the foot-levers z" 6 having springextensions, and fulcru'med on a pin, '5 whereby the scraper-beams may be vibrated laterally, 15

substantially as shown and described.

THOMAS M. HART. Witnesses:

H. M. THOMPSON, W. S. BURROUGHS. 

